Will Greenwood will work with the Barbarians coaching team once again ahead of their match against the All Blacks at Twickenham next month.
The England World Cup winner links up with former Wallabies coach Robbie Deans as was the case in 2016, with Crusaders coach Scott Robertson also involved fresh off winning the Super Rugby title in his first year in charge.
"I'm really looking forward to doing it and it was a great experience working with Robbie last time," said Greenwood.
"I watched Scott and the Crusaders win Super Rugby, his style is hugely exciting and it's a great opportunity for me to keep learning."
The Barbarians are in action overseas first under Alan Jones against the Classic Wallabies and Australia before Deans takes the reigns for the matches with New Zealand and Tonga.
The Barbarians women's team will make its first appearance on the same day as the Tonga fixture.